diff --git a/plugin/toplinks/src/Entity/TopLink.php b/plugin/toplinks/src/Entity/TopLink.php
index e964fdef32..da4655097f 100644
--- a/plugin/toplinks/src/Entity/TopLink.php
+++ b/plugin/toplinks/src/Entity/TopLink.php
@@ -110,7 +110,7 @@ class TopLink
         return $this->icon;
     }
 
-    public function setIcon(string $icon): TopLink
+    public function setIcon(string $icon = null): TopLink
     {
         $this->icon = $icon;